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Title: Techniques for improving the capacity of video on demand systems.
Creator: Kalva, Hari., Florida Atlantic University, Furht, Borko, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: This thesis presents a survey of multimedia networks and the techniques to improve the capacity of video on demand systems. A survey was conducted and comparative evaluation was done to determine the multimedia capabilities of various networks. Video on demand is an electronic video rental system in which clients request and play videos on-demand. Video on-demand system can be implemented over an existing cable TV network or an upgraded ADSL network. The two techniques used to improve the...
Show moreThis thesis presents a survey of multimedia networks and the techniques to improve the capacity of video on demand systems. A survey was conducted and comparative evaluation was done to determine the multimedia capabilities of various networks. Video on demand is an electronic video rental system in which clients request and play videos on-demand. Video on-demand system can be implemented over an existing cable TV network or an upgraded ADSL network. The two techniques used to improve the capacity of video on-demand systems are segmentation and multicasting. Segmentation consists of dividing the video into several fixed length segments, and then transmitting the segments at regular intervals instead of transmitting the video continuously. With multicasting, more than one user requesting the same video are served by a single video stream. Multicasting further assumes that each subscriber has a limited storage space, so same video segments can be multicast to subscribers simultaneously even if the requests for a video are not synchronous.
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Date Issued: 1994
PURL: http://purl.flvc.org/fcla/dt/15112
Subject Headings: Video recording, Multimedia systems, Interactive multimedia
Format: Document (PDF)

Title: Application of video error resilience techniques for mobile broadcast multicast services (MBMS).
Creator: Furht, Borko, Praveenkumar, Sanigepalli, Kalva, Hari
Abstract/Description: With data throughput for mobile devices constantly increasing, services such as video broadcast and multicast are becoming feasible. The 3GPP (3rd Generation Partnership Project) committee is currently working on a standard for mobile broadcast and multicast services (MBMS). MBMS is expected to enable easier deployment of video and multimedia services on 3G networks. We present an overview of the standard including the proposed architecture and requirements focusing on radio aspects. We...
Show moreWith data throughput for mobile devices constantly increasing, services such as video broadcast and multicast are becoming feasible. The 3GPP (3rd Generation Partnership Project) committee is currently working on a standard for mobile broadcast and multicast services (MBMS). MBMS is expected to enable easier deployment of video and multimedia services on 3G networks. We present an overview of the standard including the proposed architecture and requirements focusing on radio aspects. We discuss the issue of video error resilience in such services that is critical to maintain consistent quality for terminals. The error resilience techniques currently used in video streamingservices are not suitable for MBMS services. We analyze the error resilience techniques that are applicable within the context of MBMS standard and present our early research in this area.
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Date Issued: 2004-12-13 - 2004-12-15
PURL: http://purl.flvc.org/fcla/dt/347823
Subject Headings: Multimedia systems., Broadcasting --Technological innovations., Wireless communication systems., Multimedia communications.
Format: Document (PDF)

Title: Design issues for interactive television systems.
Creator: Furht, Borko, Kalra, Deven, Kitson, Frederick L., Rodriquez, Arturo A., Wall, William E.
Date Issued: 1995
PURL: http://purl.flvc.org/fcla/dt/341753
Subject Headings: Multimedia systems., Broadcasting --Technological innovations.
Format: Document (PDF)

Title: A new approach in radio and television broadcasting over the Internet.
Creator: Furht, Borko, Westwater, Raymond, Ice, Jeffrey
Date Issued: 1999
PURL: http://purl.flvc.org/fcla/dt/345861
Subject Headings: Broadcasting --Technological innovations., Multimedia systems., Webcasting.
Format: Document (PDF)

Title: Image retrieval using visual attention.
Creator: Mayron, Liam M., College of Engineering and Computer Science, Florida Atlantic University, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: The retrieval of digital images is hindered by the semantic gap. The semantic gap is the disparity between a user's high-level interpretation of an image and the information that can be extracted from an image's physical properties. Content based image retrieval systems are particularly vulnerable to the semantic gap due to their reliance on low-level visual features for describing image content. The semantic gap can be narrowed by including high-level, user-generated information. High-level...
Show moreThe retrieval of digital images is hindered by the semantic gap. The semantic gap is the disparity between a user's high-level interpretation of an image and the information that can be extracted from an image's physical properties. Content based image retrieval systems are particularly vulnerable to the semantic gap due to their reliance on low-level visual features for describing image content. The semantic gap can be narrowed by including high-level, user-generated information. High-level descriptions of images are more capable of capturing the semantic meaning of image content, but it is not always practical to collect this information. Thus, both content-based and human-generated information is considered in this work. A content-based method of retrieving images using a computational model of visual attention was proposed, implemented, and evaluated. This work is based on a study of contemporary research in the field of vision science, particularly computational models of bottom-up visual attention. The use of computational models of visual attention to detect salient by design regions of interest in images is investigated. The method is then refined to detect objects of interest in broad image databases that are not necessarily salient by design. An interface for image retrieval, organization, and annotation that is compatible with the attention-based retrieval method has also been implemented. It incorporates the ability to simultaneously execute querying by image content, keyword, and collaborative filtering. The user is central to the design and evaluation of the system. A game was developed to evaluate the entire system, which includes the user, the user interface, and retrieval methods.
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Date Issued: 2008
PURL: http://purl.flvc.org/fcla/flaent/EN00154040/68_1/98p0137i.pdf, http://purl.flvc.org/FAU/58006
Subject Headings: Image processing, Digital techniques, Database systems, Cluster analysis, Multimedia systems
Format: Document (PDF)

Title: Multimedia broadcasting over the Internet: part 1.
Creator: Furht, Borko, Westwater, Raymond, Ice, Jeffrey
Date Issued: 1998
PURL: http://purl.flvc.org/fcla/dt/336406
Subject Headings: Multimedia systems., Internet., Broadcasting --Technological innovations., Webcasting., Internet Protocol multimedia subsystem.
Format: Document (PDF)

Title: Multimedia broadcasting over the internet: part 2- video compression.
Creator: Furht, Borko, Westwater, Raymond, Ice, Jeffrey
Date Issued: 1999
PURL: http://purl.flvc.org/fcla/dt/337433
Subject Headings: Multimedia systems., Broadcasting --Technological innovations., Digital video., Webcasting., Internet Protocol multimedia subsystem.
Format: Document (PDF)

Title: Multimedia systems: an overview.
Creator: Furht, Borko
Date Issued: 1994
PURL: http://purl.flvc.org/fcla/dt/358140
Subject Headings: Multimedia systems., Broadcasting --Technological innovations., Internetworking (Telecommunication) --Computer programs.
Format: Document (PDF)

Title: Video identification using video tomography.
Creator: Furht, Borko, Kalva, Hari, Leon, Gustavo, Yellamraju, Sivakiran
Date Issued: 2009
PURL: http://purl.flvc.org/fcla/dt/347362
Subject Headings: Multimedia systems --Security measures., Digital watermarks., Digital video.
Format: Document (PDF)

Title: Security in voice over IP networks.
Creator: Pelaez, Juan C., Florida Atlantic University, Fernandez, Eduardo B., College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Voice over IP (VoIP) is revolutionizing the global communications system by allowing human voice and fax information to travel over existing packet data networks along with traditional data packets. The convergence of voice and data in one simplified network brings both benefits and constraints to users. Among the several issues that need to be addressed when deploying this technology, security is one of the most critical. This thesis will present a combination of security patterns based on...
Show moreVoice over IP (VoIP) is revolutionizing the global communications system by allowing human voice and fax information to travel over existing packet data networks along with traditional data packets. The convergence of voice and data in one simplified network brings both benefits and constraints to users. Among the several issues that need to be addressed when deploying this technology, security is one of the most critical. This thesis will present a combination of security patterns based on the systematic analysis of attacks against a VoIP network and the existing techniques to mitigate these attacks, providing good practices for all IP telephony systems. The VoIP Security Patterns which are based on object-oriented modeling, will help network designers to improve the level of security not only in voice but also in data, video, and fax over IP networks.
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Date Issued: 2004
PURL: http://purl.flvc.org/fcla/dt/13190
Subject Headings: Internet telephony--Security measures, Computer network protocols, Multimedia systems
Format: Document (PDF)

Title: Security Enhancement in Plastic Cards Using an Invisible "Watermark" Emulated by an Embedded set of Electromagnetic Material: An Overlay Strategy to Prevailing Security Features.
Creator: Lim, Swee Hock, Neelakanta, Perambur S., Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: This thesis addresses a passive, economical strategy towards enhancing the security feature of conventional plastic cards by embedding a set of electromagnetic (EM) material that emulates an invisible "watermarking". It is an overlay strategy to prevailing security measures. Proposed method consists of incorporating (embedding) a set of metallic (foil-like) sheet of high-mu material or high-conductivity metal, or a conducting-fiber interwoven fabric. The test card when exposed to a suitable...
Show moreThis thesis addresses a passive, economical strategy towards enhancing the security feature of conventional plastic cards by embedding a set of electromagnetic (EM) material that emulates an invisible "watermarking". It is an overlay strategy to prevailing security measures. Proposed method consists of incorporating (embedding) a set of metallic (foil-like) sheet of high-mu material or high-conductivity metal, or a conducting-fiber interwoven fabric. The test card when exposed to a suitable excitation of high frequency EM excitation (with or without superimposing a static magnetic field), the plastic part yields a distinct path-reluctance to the EM energy when compared to the embedded EM material section. Sensing the resulting EM reaction with an appropriate circuit, delivers an output signal depicting the presence of the embedded "watermarking" and any encoded signature in it. The underlying concept is theoretically analyzed, relevant card-reading methods are suggested and prototype (experimental) results are presented.
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Date Issued: 2007
PURL: http://purl.flvc.org/fau/fd/FA00012534
Subject Headings: Crime prevention, Multimedia systems, Information security applications, Digital watermarking
Format: Document (PDF)

Title: Innovative video error resilient techniques for MBMS systems.
Creator: Sanigepalli, Praveen., Florida Atlantic University, Kalva, Hari, Furht, Borko, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: In the current communications age, the capabilities of mobile devices are increasing. The mobiles are capable of communicating at data rates of hundreds of mbps on 4G networks. This enables playback of rich multimedia content comparable to internet and television networks. However, mobile networks need to be spectrum-efficient to be affordable to users. Multimedia Broadcast Multicast Systems (MBMS) is a wireless broadcasting standard that is being drafted to enable multimedia broadcast while...
Show moreIn the current communications age, the capabilities of mobile devices are increasing. The mobiles are capable of communicating at data rates of hundreds of mbps on 4G networks. This enables playback of rich multimedia content comparable to internet and television networks. However, mobile networks need to be spectrum-efficient to be affordable to users. Multimedia Broadcast Multicast Systems (MBMS) is a wireless broadcasting standard that is being drafted to enable multimedia broadcast while focusing on being spectrum-efficient. The hybrid video coding techniques facilitate low bitrate transmission, but result in dependencies across frames. With a mobile environment being error prone, no error correction technique can guarantee error free transmission. Such errors propagate, resulting in quality degradation. With numerous mobiles sharing the broadcast session, any error resilient scheme should account for heterogeneous device capabilities and channel conditions. The current research on wireless video broadcasting focuses on network based techniques such as FEC and retransmissions, which add bandwidth overhead. There is a need to design innovative error resilient techniques that make video codec robust with minimal bandwidth overhead. This Dissertation introduces novel techniques in the area of MBMS systems. First, robust video structures are proposed in Periodic Intra Frame based Prediction (PIFBP) and Periodic Anchor Frame based Prediction (PAFBP) schemes. In these schemes, the Intra frames or anchor frames serve as reference frames for prediction during GOP period. The intermediate frames are independent of others; any errors in such frames are not propagated, thereby resulting in error resilience. In prior art, intra block rate is adapted based on the channel characteristics for error resilience. This scheme has been generalized in multicasting to address a group of users sharing the same session. Average packet loss is used to determine the intra block rate. This improves performance of the overall group and strives for consistent performance. Also, the inherent diversity in the broadcasting session can be used for its advantage. With mobile devices capable of accessing a WLAN during broadcast, they form an adhoc network on a WLAN to recover lost packets. New error recovery schemes are proposed for error recovery and their performance comparison is presented.
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Date Issued: 2005
PURL: http://purl.flvc.org/fcla/dt/12187
Subject Headings: Wireless communication systems, Signal processing, Digital video, Multimedia systems, Digital communications, Data transmission systems
Format: Document (PDF)

Title: Processor architectures for multimedia: A survey.
Creator: Furht, Borko
Date Issued: 1997-11-17 - 1997-11-20
PURL: http://purl.flvc.org/fcla/dt/345865
Subject Headings: Microprocessors --Design and construction., Streaming technology (Telecommunications), Broadband communication systems., Internetworking (Telecommunication), Multimedia systems.
Format: Document (PDF)

Title: Interactive graphical tools for digital signal processing education.
Creator: Aksaray, Ali Ercument., Florida Atlantic University, Erdol, Nurgun
Abstract/Description: In this thesis, we develop a set of programs in the MATLAB RTM Graphical User Interface environment, for use as an Interactive Digital Signal Processing Laboratory. The software toolbox consists of programs on selected topics covered in undergraduate Digital Signal Processing courses. Care is taken to give the user sufficient degrees of freedom to illustrate the effect of various parameter changes. Program code is left open and well documented to allow expansion.
Date Issued: 2002
PURL: http://purl.flvc.org/fcla/dt/12960
Subject Headings: Signal processing--Digital techniques--Study and teaching, Multimedia systems, Graphical user interfaces (Computer systems)
Format: Document (PDF)

Title: A feedback-based multimedia synchronization technique for distributed systems.
Creator: Ehley, Lynnae Anne., Florida Atlantic University, Ilyas, Mohammad, Furht, Borko, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Multimedia applications incorporate the use of more than one type of media, i.e., voice, video, data, text and image. With the advances in high-speed communication, the ability to transmit multimedia is becoming widely available. One of the means of transport for multimedia in distributed networks is Broadband Integrated Services Digital Network (B-ISDN). B-ISDN supports the transport of large volumes of data with a low error rate. It also handles the burstiness of multimedia traffic by...
Show moreMultimedia applications incorporate the use of more than one type of media, i.e., voice, video, data, text and image. With the advances in high-speed communication, the ability to transmit multimedia is becoming widely available. One of the means of transport for multimedia in distributed networks is Broadband Integrated Services Digital Network (B-ISDN). B-ISDN supports the transport of large volumes of data with a low error rate. It also handles the burstiness of multimedia traffic by providing dynamic bandwidth allocation. When multimedia is requested for transport in a distributed network, different Quality of Service (QOS) may be required for each type of media. For example, video can withstand more errors than voice. In order to provide, the most efficient form of transfer, different QOS media are sent using different channels. By using different channels for transport, jitter can impose skews on the temporal relations between the media. Jitter is caused by errors and buffering delays. Since B-ISDN uses Asynchronous Transfer Mode (ATM) as its transfer mode, the jitter that is incurred can be assumed to be bounded if traffic management principles such as admission control and resource reservation are employed. Another network that can assume bounded buffering is the 16 Mbps token-ring LAN when the LAN Server (LS) Ultimedia(TM) software is applied over the OS/2 LAN Server(TM) (using OS/2(TM)). LS Ultimedia(TM) reserves critical resources such as disk, server processor, and network resources for multimedia use. In addition, it also enforces admission control(1). Since jitter is bounded on the networks chosen, buffers can be used to realign the temporal relations in the media. This dissertation presents a solution to this problem by proposing a Feedback-based Multimedia Synchronization Technique (FMST) to correct and compensate for the jitter that is incurred when media are received over high speed communication channels and played back in real time. FMST has been implemented at the session layer for the playback of the streams. A personal computer was used to perform their synchronized playback from a 16 Mbps token-ring and from a simulated B-ISDN network.
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Date Issued: 1994
PURL: http://purl.flvc.org/fcla/dt/12382
Subject Headings: Multimedia systems, Broadband communication systems, Data transmission systems, Integrated services digital networks, Electronic data processing--Distributed processing
Format: Document (PDF)

Title: An innovative pixel scoring method for watermarking of binary document images.
Creator: Furht, Borko, Muharemagic, Edin
Date Issued: 2008-07-09 - 2006-07-12
PURL: http://purl.flvc.org/fcla/dt/363492
Subject Headings: Digital watermarking., Multimedia systems --Security measures., Data encryption (Computer science) --Technological innovations.
Format: Document (PDF)

Title: New approaches to encryption and steganography for digital videos.
Creator: Furht, Borko, Socek, Daniel, Kalva, Hari, Magliveras, Spyros S., Marques, Oge, Culibrk, Dubravko
Date Issued: 2007
PURL: http://purl.flvc.org/fcla/dt/337435
Subject Headings: Multimedia systems --Security measures., Digital video., Digital watermarking., Data encryption (Computer science) --Technological innovations., Cryptography.
Format: Document (PDF)

Title: Content identification using video tomography.
Creator: Leon, Gustavo A., College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Video identification or copy detection is a challenging problem and is becoming increasingly important with the popularity of online video services. The problem addressed in this thesis is the identification of a given video clip in a given set of videos. For a given query video, the system returns all the instance of the video in the data set. This identification system uses video signatures based on video tomography. A robust and low complexity video signature is designed and implemented....
Show moreVideo identification or copy detection is a challenging problem and is becoming increasingly important with the popularity of online video services. The problem addressed in this thesis is the identification of a given video clip in a given set of videos. For a given query video, the system returns all the instance of the video in the data set. This identification system uses video signatures based on video tomography. A robust and low complexity video signature is designed and implemented. The nature of the signature makes it independent to the most commonly video transformations. The signatures are generated for video shots and not individual frames, resulting in a compact signature of 64 bytes per video shot. The signatures are matched using simple Euclidean distance metric. The results show that videos can be identified with 100% recall and over 93% precision. The experiments included several transformations on videos.
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Date Issued: 2008
PURL: http://purl.flvc.org/FAU/2783207
Subject Headings: Biometric identification, High performance computing, Image processing, Digital techniques, Multimedia systems, Security measures
Format: Document (PDF)

Title: HEVC optimization in mobile environments.
Creator: Garcia, Ray, Kalva, Hari, Florida Atlantic University, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
Abstract/Description: Recently, multimedia applications and their use have grown dramatically in popularity in strong part due to mobile device adoption by the consumer market. Applications, such as video conferencing, have gained popularity. These applications and others have a strong video component that uses the mobile device’s resources. These resources include processing time, network bandwidth, memory use, and battery life. The goal is to reduce the need of these resources by reducing the complexity of the...
Show moreRecently, multimedia applications and their use have grown dramatically in popularity in strong part due to mobile device adoption by the consumer market. Applications, such as video conferencing, have gained popularity. These applications and others have a strong video component that uses the mobile device’s resources. These resources include processing time, network bandwidth, memory use, and battery life. The goal is to reduce the need of these resources by reducing the complexity of the coding process. Mobile devices offer unique characteristics that can be exploited for optimizing video codecs. The combination of small display size, video resolution, and human vision factors, such as acuity, allow encoder optimizations that will not (or minimally) impact subjective quality. The focus of this dissertation is optimizing video services in mobile environments. Industry has begun migrating from H.264 video coding to a more resource intensive but compression efficient High Efficiency Video Coding (HEVC). However, there has been no proper evaluation and optimization of HEVC for mobile environments. Subjective quality evaluations were performed to assess relative quality between H.264 and HEVC. This will allow for better use of device resources and migration to new codecs where it is most useful. Complexity of HEVC is a significant barrier to adoption on mobile devices and complexity reduction methods are necessary. Optimal use of encoding options is needed to maximize quality and compression while minimizing encoding time. Methods for optimizing coding mode selection for HEVC were developed. Complexity of HEVC encoding can be further reduced by exploiting the mismatch between the resolution of the video, resolution of the mobile display, and the ability of the human eyes to acquire and process video under these conditions. The perceptual optimizations developed in this dissertation use the properties of spatial (visual acuity) and temporal information processing (motion perception) to reduce the complexity of HEVC encoding. A unique feature of the proposed methods is that they reduce encoding complexity and encoding time. The proposed HEVC encoder optimization methods reduced encoding time by 21.7% and bitrate by 13.4% with insignificant impact on subjective quality evaluations. These methods can easily be implemented today within HEVC.
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Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA00004112
Subject Headings: Coding theory, Digital coding -- Data processing, Image processing -- Digital techniques, Multimedia systems, Video compression
Format: Document (PDF)

Title: Cognitive styles and concept mapping dimensions of hypermedia computer users.
Creator: Kessler, Rohn., Florida Atlantic University, Morris, John D., Hunt, John J.
Abstract/Description: Computers are increasingly a part of college and university instruction. Interactive hypermedia applications are being introduced throughout much of the curriculum as a possible solution to both improving educational outcomes and expanding educational horizons. The purpose of the present study was to investigate the effects of an interactive hypermedia application and a section of text on a measure of learning and understanding called concept mapping. The inter-rater reliability of concept...
Show moreComputers are increasingly a part of college and university instruction. Interactive hypermedia applications are being introduced throughout much of the curriculum as a possible solution to both improving educational outcomes and expanding educational horizons. The purpose of the present study was to investigate the effects of an interactive hypermedia application and a section of text on a measure of learning and understanding called concept mapping. The inter-rater reliability of concept map scores has not been reported previously in the literature. Results in this study concerning the reliability of concept map scoring procedures indicated that the continued improvement of inter-rater reliability is desirable if concept mapping is to actualize its potential as a practical, useful, and unique learning tool. Results suggest that concept mapping appears capable of assessing: (a) baseline knowledge, (b) meaningful learning, (c) the construction of new knowledge, and (d) knowledge change. Its usefulness in these areas and as an alternative or addition to standardized assessment is contingent, however, upon demonstrations of validity and reliability. Suggestions for further concept map research included: (a) replicating the present study with other measures of cognitive style across a wide variety of interactive hypermedia software applications, (b) doing longitudinal studies of concept mapping, (c) improving the reliablity of concept map scoring and evaluation, (d) looking at other aspects of cognition and information processing related to concept mapping, (e) using computer-based concept mapping tools, and (f) using concept maps as templates for the organization and integration of hypermedia elements.
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Date Issued: 1995
PURL: http://purl.flvc.org/fcla/dt/12404
Subject Headings: Hypertext systems, Interactive multimedia, Concept learning, Computer-assisted instruction, Curriculum planning, Human-computer interaction
Format: Document (PDF)

FAU Theses and Dissertations (18)	+ -
FAU College Collections (10)	+ -

Multimedia systems (11)	+ -
Multimedia systems. (9)	+ -
Broadcasting --Technological innovations. (6)	+ -
Digital video. (3)	+ -
Interactive multimedia (3)	+ -

Multimedia systems --Security measures. (3)	+ -
Webcasting. (3)	+ -
Data encryption (Computer science) --Technological innovations. (2)	+ -
Data transmission systems (2)	+ -
Digital techniques (2)	+ -
Digital watermarking (2)	+ -
Digital watermarking. (2)	+ -
Image processing (2)	+ -
Internet Protocol multimedia subsystem. (2)	+ -
Multimedia systems--Security measures (2)	+ -
Artificial intelligence--Data processing. (1)	+ -
Big data. (1)	+ -
Biometric identification (1)	+ -
Broadband communication systems (1)	+ -
Broadband communication systems. (1)	+ -
Cluster analysis (1)	+ -
Coding theory (1)	+ -
Communication devices for people with disabilities (1)	+ -
Computer network protocols (1)	+ -
Computer networks--Security measures (1)	+ -
Computer security (1)	+ -
Computer storage devices (1)	+ -
Computer vision. (1)	+ -
Computer-assisted instruction (1)	+ -
Computers and people with disabilities (1)	+ -

Electronic Thesis or Dissertation (18)	+ -
article (10)	+ -

Florida Atlantic University (16)	+ -
Furht, Borko (16)	+ -
College of Engineering and Computer Science (13)	+ -
Department of Computer and Electrical Engineering and Computer Science (13)	+ -
Kalva, Hari (6)	+ -

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